2004 ROOM AIR-CONDITIONING TECHNICAL HANDBOOK - 3-
TABLE OF CONTENTS Item Models Technical manual Recommendable spare parts price list Parts list SRK10CDV-1 90 SRC10CDV-1 SRK10CDV-4 90 SRC10CDV-4 1 SRK13CDV-1 98 SRC13CDV-1 SRK13CDV-4 98 SRC13CDV-4 SRK06CC-1 108 SRC06CC-1 SRK06CC-4 108 SRC06CC-4 SRK07CC-1 116 SRC07CC-1 SRK07CC-4 116 SRC07CC-4 31 SRK09CC-1 124 SRC09CC-1 SRK09CC-4 124 SRC09CC-4 SRK12CC-1 132 SRC12CC-1 SRK12CC-4 132 SRC12CC-4 SRK50A 142 SRC50CA SRK56A 63 150 SRC56CA SRK56A-4 150 SRC56CA-4 *Models with “-4” have the “HEAVY DUTY” logo add
TECHNICAL MANUAL MODELS SRK10CDV-1 SRK10CDV-4 SRK13CDV-1 SRK13CDV-4 CONTENTS 1. GENERAL INFORMATION .............................................................................. 2 1.1 Specific features ....................................................................................... 2 1.2 How to read the model name ................................................................... 2 2. SELECTION DATA ..........................................................................................
1 GENERAL INFORMATION 1.1 Specific features The “Mitsubishi Daiya” room air-conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor. (1) Remote control flap The flap can be automatically controlled by operating wireless remote controller.
2 SELECTION DATA 2.1 Specifications Model SRK10CDV-1, -4 (Indoor unit) SRC10CDV-1, -4 (Outdoor unit) Model SRK10CDV-1, -4 Item Cooling capacity (1) SRC10CDV-1, -4 W 2638 Power source 1 Phase, 220V, 50Hz Operation data(1) Cooling input kW 0.803 Running current (Cooling) A 4.2 Inrush current A 18.1 COP (In cooling) 3.29 Noise level(4) Exterior dimensions Height × Width × Depth dB (A) 39 46 mm 250 × 815 × 247 540 × 720 × 290 Cool white Stucco white 9.
Model SRK13CDV-1 (Indoor unit) SRC13CDV-1 (Outdoor unit) Model SRK13CDV-1 Item Cooling capacity(1) SRC13CDV-1 W 3500 Power source 1 Phase, 220V, 50Hz Operation data(1) Cooling input kW 1.16 Running current (Cooling) A 6.1 Inrush current A 33.2 COP (In cooling) 3.28 Noise level(4) Exterior dimensions Height × Width × Depth dB (A) 41 49 mm 250 × 815 × 247 640 × 850 × 290 Cool white Stucco white 9.
Model SRK13CDV-4 (Indoor unit) SRC13CDV-4 (Outdoor unit) Model SRK13CDV-4 Item Cooling capacity(1) SRC13CDV-4 W 3810 Power source 1 Phase, 220V, 50Hz Operation data(1) Cooling input kW 1.16 Running current (Cooling) A 6.1 Inrush current A 33.2 COP (In cooling) 3.28 Noise level(4) Exterior dimensions Height × Width × Depth dB (A) 41 49 mm 250 × 815 × 247 640 × 850 × 290 Cool white Stucco white 9.
2.2 Range of usage & limitations Models All models Item Indoor return air temperature (Upper, lower limits) Refer to the selection chart Outdoor air temperature (Upper, lower limits) Refrigerant line (one way) length Max. 15m Vertical height difference between outdoor unit and indoor unit Max. 5m (Outdoor unit is higher) Max. 5m (Outdoor unit is lower) Rating ± 10% Power source voltage Voltage at starting Min. 85% of rating Frequency of ON-OFF cycle Max. 10 times/h ON and OFF interval Max.
(2) Outdoor unit Models SRC10CDV-1, 10CDV-4 Unit: mm Drain holes 50 264.5 404.5 17.8 510 71 340 14 47.4 290 312.5 42.6 13.5 12 139 2-16 x12 720 Terminal block 61.9 39.7 99.9 40° 40° 14.4 Service valve (Liquid) Flare connecting ø6.35 (1/4") 33.3 540 139.3 Service valve (Gas) Flare connecting ø9.52 (3/8") Model SRC13CDV-1, 13CDV-4 Unit: mm Drain hole 50 12 14 49.6 314 290 43.5 12 476 203.1 328 286.4 510 Elogated hole (2-12 x16) 136.9 850 Terminal block 640 124 34.
2.4 Piping system Models SRK10CDV-1, 10CDV-4, 13CDV-1, 13CDV-4 Indoor unit Outdoor unit Flare connecting ( Piping (Gas) 10 : ø9.52 13 : ø12.7 Cooling cycle Service valve (Gas) Check joint ) Accumulator Room temp. thermistor Heat exchanger Heat exchanger thermistor Heat exchanger Compressor Piping (Liquid) ø6.
2.5 Selection chart Correct the cooling capacity in accordance with the conditions as follows. The net cooling capacity can be obtained in the following way. Net capacity = Capacity shown on specification ✕ Correction factors as follows. (1) Coefficient of cooling capacity in relation to temperatures 1.3 Coefficient of cooling capacity in relation to temperature 1.2 Cooling 1.1 1.0 0.9 0.8 0.7 0.6 Outdoor air D.B. temperature °C D.B.
3 ELECTRICAL DATA 3.
Model SRK13CDV-1, 13CDV-4 Power source 1 Phase 220V 50Hz Indoor unit Outdoor unit T2 Y/GN LB BR T1 BK WH BK BK WH Sh1 BK HEAT EXCHANGER 52C4 52C3 L2 52C Wireless R-Amp Color symbol Black Blue BR Brown LB Light blue Y Yellow RD Red OR Orange WH White Y/G Yellow/Green Meaning of marks Symbol Parts name Symbol Parts name CC Capacitor for CM SM CFI Capacitor for FMI Th1, 2 Thermistor CFO Capacitor for FMO Tr Transformer Compressor motor ZNR Varistor Fuse 52C Ma
4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Operation control function by remote controller Remote controller Models All models S Operation section FAN SPEED button Each time the button is pushed, the cator is switched over in turn. OPERATION MODE select button indi- Each time the button is pushed, the cator is switched over in turn. HI POWER ECONO AUTO HI MED LO HI POWER button This button changes the HI POWER mode.
Unit indication section Models All models RUN light (green) TIMER light (yellow) • Illuminates during operation. Illuminates during TIMER operation. RUN HIPOWER ECONO TIMER ECONOMY light (orange) HI POWER light (green) Illuminates during HI POWER operation. Illuminates during ECONOMY operation. (2) Back-up switch When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this switch may be used to turn the unit on and off.
(4) Flap control Control the flap by AIRFLOW button on the wireless remote controller. (a) Air scroll The flap will be automatically set to the angle of air flow best to operation. 1) Starting time of operation During cooling and s dry operation t Stops for approximately 5 seconds in the horizontal position. 2) Thick line : Rapid movement Thin line : Slow movement When not operating The flap returns to the position of air flow directly below, when operation has stopped.
(6) Outline of cooling operation (a) Operation of major fanctinal components Functional components Indoor fan motor Item When the compressor command is OFF When the compressor command is ON When the compressor goes OFF due to an abnormal stop.
(7) Outline of dehumidifying operation (a) Choose the appropriate operation block area by the difference between room temperature and thermostat setting temperature as shown below. ¡ Operation block area D Block C Block B Block A Block –2 0 +3 Room temp. – Setting temp.(deg) (b) Start up operation C.D Block A.
(8) Automatic operation (a) Determination of operation mode The blow operation of the indoor fan is carried out at the 1st speed for 20 seconds and the room temperature is checked to determine the operation mode automatically. (When the unit is operated by the turn-on timer, the blow operation is not carried out.
(10) Protective control function (a) Dew condensation prevention control for cooling operation This prevents dew condensation, in the indoor unit, from occurring. 1) Operating condition: when 52C is kept ON for 30 min. after the unit starts operation. 2) Operation content: forces the indoor fan to change from Speed 1 to Speed 2. 3) Resetting condition: When 52C is off, or when dew condensation prevention control has been operating continuously for 30 minutes.
5 APPLICATION DATA SAFETY PRECAUTIONS ¡ Please read these “Safety Precautions” first then accurately execute the installation work. ¡ Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section.
5.1 Selection of location for installation (1) Indoor unit (a) Where there is no obstructions to the air flow and where the cooled air can be evenly distributed. 6.5 cm (b) A solid place where the unit or the wall will not vibrate. (c) A place where there will be enough space for servicing. (Where Right side Left side 10 cm 5 cm space mentioned below can be secured) (d) Where wiring and the piping work will be easy to conduct.
5.2 Installation of indoor unit Installation of installation board Fixing of installation board Look for the inside wall structures (Intersediate support or pillar and firaly install the unit after level surface has been checked.) 450 INSTALLATION SPACE (INDOOR UNIT) (FRONT VIEW) Unit : mm Speace for service 100 Speace for service 50 580 117.5 216.5 148.5 450 216.5 44.
(3) Preparation of indoor unit (a) Mounting of connecting wires 1) Remove the lid (R). 2) Remove the terminal cover. 3) Remove the wiring clamp. 4) Connect the connecting wire securely to the terminal block. Terminal block Use cables for interconnection wiring to avoid loosening of the wires. CENELEC code for cables. Required field cables. H05 RNR3G1.
(4) Installation on indoor unit (a) Install the indoor unit on the mounting plate. Hook the upper part of the indoor unit on the stoppers disposed at the upper part of the mounting plate and lightly push the lower part of the indoor unit so that the unit is fixed in position. ¡ When removing the indoor unit 1) Disconnect the lid at right and left. Mounting plate 2) Pull down the stoppers (right and left) proWall vided at the bottom of the indoor unit base. (See the detail view shown at right.
(2) Connection of refrigerant piping Outdoor unit side Indoor unit side ¡ Connect firmly gas and liquid side pipings by Torque wrench. ¡ Connect firmly gas and liquid side pipings by Torque wrench. Spanner (for fixing the piping) Torque wrench ¡ Specified torquing value: Liquid side (ø6.35) : 15.7~19.6N·m (1.6~2.0kgf·m) Gas side (ø9.52) : 29.4~39.2N·m (3.0~4.0kgf·m) (ø12.7) : 39.2~49.0N·m (4.0~5.0kgf·m) ¡ Specified torquing value: Liquid side (ø6.35) : 15.7~19.6N·m (1.6~2.0kgf·m) Gas side (ø9.52) : 29.
(b) Finishing and fixing (i) Insulation Refrigerant piping Electrical wiring Covering tape Drain hose Tie up the piping with wrapping tape, and shape it so that it conforms to which the pipe is attached. (ii) Fix them with clamps as right figure. Cover the exterior portion with covering tape and shape the piping so it will match the contours of the route that the piping to take. Also fix the wiring and pipings to the wall with clamps. Tapping screw 5.
6 MAINTENANCE DATA 6.1 Trouble shooting (1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models] All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it is necessary to understand the function controlled by a micro computer thoroughly, so as not to mistakenly identify correct operations as mis-operations.
(2) Indication of Self Diagnosis (Indoor unit) Place of defect Connect of Defect TIMER lamp is lights continuously. RUN lamp is lights continuously. RUN lamp is flashing. (1 Time flash.) Abnormality of heat exchanger thermistor. ¡ Disconnection of heat exchanger thermistor. RUN lamp is flashing. (2 Time flash.) Abnormality of room temperature thermistor. ¡ Disconnection of room temperature thermistor. RUN lamp is flashing. (6 Time flash.) Abnormality of indoor fan motor.
(4) Trouble Diagnostic Procedures Unit malfunctions or does not stop. Indoor lamp of indoor unit does not illuminate. Remove receptacle. Insert it after 3 min. and operate. Runaway of microcomputer No change. Replace PCB. Normal operation. Microcomputer rarely mis-starts even during times or power supply or power failure, but, it can sometimes occur during those times. If it occurs, check the operation, when the result is positive then proceed as normal. Check receptacle voltage.
(6) How to make sure of remote controller (1) Is remote controller normal? NO Note (1) How to check the remote controller Remote controller defects (a) (b) YES Press the reset switch of remote controller. If the almost normal if entire display of remote controller is shown after indication.
(2) Refrigerant charge (a) Discharge refrigerant entirely from the unit and evacuate the unit. (b) Keep the gauge manifold and connect a refrigerant cylinder to the unit. Note: Addition of refrigerant without evacuation is unreasonable, because it will result in low charge or overcharge. (c) Record the weight of the refrigerant cylinder on the balance. This is necessary for making sure of the charged refrigerant amount. (d) Purge air from the charge hose A .
MODELS SRK06CC-1 SRK06CC-4 SRK07CC-1 SRK07CC-4 SRK09CC-1 SRK09CC-4 SRK12CC-1 SRK12CC-4 CONTENTS 1. GENERAL INFORMATION .............................................................................. 32 1.1 Specific features ....................................................................................... 32 1.2 How to read the model name ................................................................... 32 2. SELECTION DATA ..........................................................................
1 GENERAL INFORMATION 1.1 Specific features The “Mitsubishi Daiya” room air conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling or heating equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor. (1) Remote control flap The flap can be automatically controlled by operating wireless remote control.
2 SELECTION DATA 2.1 Specifications Model SRK06CC-1, -4 (Indoor unit) SRC06CC-1, -4 (Outdoor unit) Model SRK06CC-1, -4 Item Cooling capacity (1) W 1800 Power source 1 Phase, 220/240V, 50Hz Cooling input Operation data(1) SRC06CC-1, -4 kW 0.93 Running current (Cooling) A 4.3/4.6 Inrush current A 18.2 COP (In cooling) 1.93 Noise level(4) Exterior dimensions Height × Width × Depth dB (A) 40 54 mm 250 × 750 × 178 540 × 645 × 245 Ivory white Polar white 7.
Model SRK07CC-1, -4 (Indoor unit) SRC07CC-1, -4 (Outdoor unit) Model SRK07CC-1, -4 Item Cooling capacity(1) W 2200 Power source 1 Phase, 220/240V, 50Hz Cooling input Operation data(1) SRC07CC-1, -4 kW 0.94 Running current (Cooling) A 4.3/4.7 Inrush current A 18.2 COP (In cooling) 2.34 Noise level(4) Exterior dimensions Height × Width × Depth dB (A) 40 54 mm 250 × 750 × 178 540 × 645 × 245 Ivory white Polar white 7.
Model SRK09CC-1, -4 (Indoor unit) SRC09CC-1, -4 (Outdoor unit) Model SRK09CC-1, -4 Item Cooling capacity(1) W 2500 Power source 1 Phase, 220/240V, 50Hz Cooling input Operation data(1) SRC09CC-1, -4 kW 0.96 Running current (Cooling) A 4.4/4.8 Inrush current A 18.2 COP (In cooling) 2.60 Noise level(4) Exterior dimensions Height × Width × Depth dB (A) 45 54 mm 250 × 750 × 178 540 × 645 × 245 Ivory white Polar white 7.
Model SRK12CC-1, -4 (Indoor unit) SRC12CC-1, -4 (Outdoor unit) Model SRK12CC-1, -4 Item Cooling capacity(1) W 3500 Power source 1 Phase, 220/240V, 50Hz Cooling input Operation data(1) SRC12CC-1, -4 kW 1.38 Running current (Cooling) A 6.4/6.8 Inrush current A 33.6 COP (In cooling) 2.
2.2 Range of usage & limitations Models All models Item Indoor return air temperature (Upper, lower limits) Refer to the selection chart Outdoor air temperature (Upper, lower limits) Refrigerant line (one way) length Max. 15m Vertical height difference between Max. 5m (Outdoor unit is higher) outdoor unit and indoor unit Max. 5m (Outdoor unit is lower) Rating ± 10% Power source voltage Min. 85% of rating Voltage at starting Frequency of ON-OFF cycle Max. 10 times/h ON and OFF interval Max.
Models SRK12CC-1, 12CC-4 Unit: mm Piping hole right (left) 174 3 56 275 790 49 9 A Terminal block 15 450 170 9 46 170 117 760 15 16 Remote controller 260 187.5 61 60 36 6 780 67 62 18 51 37 Piping for Gas 390 (ø12.7) Piping for Liquid 440 (ø6.35) Piping hole (ø65) Piping hole (ø65) Drain hose 600 (ø16) VIEW A (2) Outdoor unit Models SRC06CC-1, 06CC-4, 07CC-1, 07CC-4, 09CC-1, 09CC-4 Unit: mm 12 44 274.5 245 42 Drain holes 300 192.5 13.5 50 23 12 372.5 82.
Models SRC12CC-1, 12CC-4 Unit: mm MAX.80 23 14 44 65 93 255 272 58 Drain holes 22 14 50 55 265 795 32 40 127.7 115 413 542 539 Terminal block 45˚ 16 ´ 12 (Oval holes) for unit fixing 45˚ 15 44 14 272 300 Drain holes 510 142.5 50 58 142.5 Service Valve (Liquid) Flare fitting Ø6.35 (1/4˝) 33 14 Service Valve (Gas) Flare fitting Ø12.7 (1/2˝) 2.
Models SRK12CC-1, 12CC-4 Indoor unit Outdoor unit Flare connecting Cooling cycle Service valve (Gas) Piping (Gas) (ø12.7) Heat exchanger Heat exchanger Discharge Check joint Room temperature thermistor Accumulator Compressor Heat exchanger thermistor Suction Capillary tube (ø6.35) Piping (Liquid) Service valve (Liquid) Flare connecting 2.5 Selection chart Correct the cooling capacity in accordance with the conditions as follows. The net cooling capacity can be obtained in the following way.
3 ELECTRICAL DATA 3.
Models SRK12CC-1, 12CC-4 Indoor unit Outdoor unit Power source 1 Phase 220/240V 50Hz Wireless R-Amp Display Printed circuit board Color symbol BK Black BL Blue BR Brown LB Light blue Y Yellow RD Red OR Orange WH White Y/G Yellow/Green Meaning of marks Symbol Parts name Symbol CC Capacitor for CM LM Parts name Louver motor CFI Capacitor for FMI Th1, 2 Thermistor CFO Capacitor for FMO Tr Transformer CM Compressor motor ZNR Fuse 51C Motor protector for CM FMI Fan m
4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Operation control function by remote controller OPERATION MODE select button Each time the button is pushed, the¡ indicator is switched over in turn. ON/OFF button Press for starting operation, press again for stopping. FAN SPEED button AIRFLOW button Each time the button is pushed, the¡ indicator is switched over in turn. This button changes the flap mode.
(2) Flap control Control the flap by AIRFLOW button on the wireless remote controller. (a) Natural flow (AUTO) The flap will be automatically set to the angle of air flow best to operation. (i) Starting time of operation In case of cooling s and dry operation t Stops at the level position for one minute. Sway operation ¡ The flap operation as shown above will be repeated. (ii) When not operating The flap returns to the position of air flow directly below, when operation has stopped.
(4) AUTOMATIC operation (a) Determination of operation mode The blow operation of the indoor fan is carried out at the 1st speed for 20 seconds and the room temperature is checked to determine the operation mode automatically. (When the unit is operated by the turn-on timer, the blow operation is not carried out.
(9) Fan control (a) Fan speed change Mode COOL Fan speed knob FAN AUTO See below LOW Speed 1 (Speed 1) Speed 1 (Speed 1) MED Speed 2 (Speed 2) Speed 2 (Speed 2) HIGH Speed 3 (Speed 4) Speed 3 (Speed 3) Notes (1) (2) Please refer to page 46 regarding dry operation. Figure in ( ) shows the case that the set temperature is continuing.
(c) DRY operation After finishing start up operation described in (b) above, thermal dry operation is performed at 8 minutes intervals, according to the difference between room temperature and thermostat setting temperature as shown below. Beside, 1 cycle of this operating time consists of 8 minutes, 7 cycle operation is performed then.
(13) Three-Minute Forced Operation When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the operation mode. (After 3 minutes has passed the thermal operation is effective.) However, stopping the compressor via a stop signal or protection control has priority.
5 APPLICATION DATA SAFETY PRECAUTIONS ¡ Please read these “Safety Precautions” first then accurately execute the installation work. WARNING and CAUTION , those ¡ Though the precautionary points indicated herein are divided under two headings, points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section.
Standard accessories (Installation kit) 1 Installation board (Attached to the rear of the indoor unit) 2 Tapping screws (for installation board) 3 Battery (UM-4, 1.5V) Option parts Q'ty Necessary tools for the installation work 1 1 Plus headed driver 5 2 Knife 2 3 Saw 4 Tape measure 5 Hammer Q'ty 6 Spanner wrench (12 type:4) ( 15.7 to 49.0N · m (1.6 to 5.
5.
(3) Preparation of indoor unit 1 Mounting of connecting wires a Remove lid. b Connect the connection wire securely to the terminal block. ¡ Affix the connection wire securely to the terminal block. If the wire is not affixed completely, contact will be poor, and it is dangerous as the terminal block may heat up and catch fire. ¡ Take care not to confuse the terminal numbers for indoor and outdoor connections. ¡ Affix the connection wire using the wiring clamp.
¡ When conducting the central rear piping, use a nipper to cut out knock-out holes in the installation board. Gutter ¡ Do not place the power supply cords above the gutter, because the air conditioner is structured in a way where condensation on the back side is collected in to the drain pan before drainage. Wall Pipes storage area ¡ Do not make traps in the drain hose line.
(4) Removal and installation of the front panel ¡ 06, 07, 09 type 1 Removal ¡ Remove fixing screws (2 places). ¡ Lift the lower part of panel toward you, then remove the panel by pushing up its upper portion. 2 Installation ¡ Remove the air filter without fall. ¡ Put the front panel on the main unit. ¡ Push the portion shown by in the below illustration rearward. ¡ Tighten fixing screws (2 places). ¡ Set the air filter.
5.4 Connection of refrigerant pipings (1) Preparation Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them. 1 Indoor unit side 2 Outdoor unit side Dimension A Liquid side (f6.35): 9-9.5 dia Gas side (f9.52): 13.2-14 dia (f12.7): 16.2-17 dia Press (Do not turn) Remove ¡ Remove the flared nuts. (on both liquid and gas sides) (2) Remove ¡ Remove the flared nuts.
(4) Insulation of connecting portion 1 Cover the connection portion of the refrigerant piping with the pipe cover and seal them. If neglecting to do so, moisture occurs on the piping and water will drip out. To cover the connecting portion with insulation materials, cut upper portion and then seal it with insulation materials.
5.8 Precautions for wireless remote controller installation and operation (1) Wireless remote controller covers the following distances: (a) When operating facing the air-conditioner: 5 m ss le or Wireless remote controller 5 m or less or les s or s s le or less Notes (1) The remote controller is correctly facing the sensing element of the air conditioner when being manipulated. (2) The typical coverage is indicated (in the left illustration). It may be more or less depending on the installation.
6 MAINTENANCE DATA 6.1 Trouble shooting (1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models] All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it is necessary to understand the function controlled by a micro computer thoroughly, so as not to mistakenly identify correct operations as mis-operations.
(2) Indication of Self Diagnosis (Indoor unit) Place of defect Connect of Defect TIMER lamp is lights continuously. RUN lamp is lights continuously. RUN lamp is flashing. (1 Time flash.) Abnormality of heat exchanger thermistor. ¡ Disconnection of heat exchanger thermistor. RUN lamp is flashing. (2 Time flash.) Abnormality of room temperature thermistor. ¡ Disconnection of room temperature thermistor. RUN lamp is flashing. (6 Time flash.) Abnormality of indoor fan motor.
(4) Trouble Diagnostic Procedures Unit malfunctions or does not stop. Indoor lamp of indoor unit does not illuminate. Remove receptacle. Insert it after 3 min. and operate. Runaway of microcomputer No change. Replace PCB. Normal operation. Microcomputer rarely mis-starts even during times or power supply or power failure, but, it can sometimes occur during those times. If it occurs, check the operation, when the result is positive then proceed as normal. Check receptacle voltage.
(6) How to make sure of remote controller (1) Is remote controller normal? NO Note (1) How to check the remote controller Remote controller defects (a) (b) YES Again pushing operating switch Operating the unit? Press the reset switch of remote controller. If the almost normal if entire display of remote controller is shown after indication.
(2) Refrigerant charge (a) Discharge refrigerant entirely from the unit and evacuate the unit. (b) Keep the gauge manifold and connect a refrigerant cylinder to the unit. Note: Addition of refrigerant without evacuation is unreasonable, because it will result in low charge or overcharge. (c) Record the weight of the refrigerant cylinder on the balance. This is necessary for making sure of the charged refrigerant amount. (d) Purge air from the charge hose A .
MODELS SRK50CA SRK56CA SRK56CA-4 CONTENTS 1. GENERAL INFORMATION ............................................................................. 64 1.1 Specific features ....................................................................................... 64 1.2 How to read the model name ................................................................... 64 2. SELECTION DATA .......................................................................................... 65 2.1 Specifications ..............
1 GENERAL INFORMATION 1.1 Specific features The “Mitsubishi Daiya” room air-conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor. (1) Remote control flap The flap can be automatically controlled by operating wireless remote control.
2 SELECTION DATA 2.1 Specifications Model SRK50A (Indoor unit) SRC50CA (Outdoor unit) Model SRK50A Item Cooling capacity (1) W 4500 Power source 1 Phase, 220/230/240V, 50 Hz Cooling input Operation data(1) SRC50CA kW 1.79 Running current (Cooling) A 8.4/8.0/7.7 Inrush current A 39/41/42 COP (In cooling) 2.
Model SRK56A, -4 (Indoor unit) SRC56CA, -4 (Outdoor unit) Model SRK56A, -4 Item Cooling capacity (1) W 5000 Power source 1 Phase, 220/230/240V, 50 Hz Cooling input Operation data(1) SRC56CA, -4 kW 2.08 Running current (Cooling) A 9.7/9.3/8.9 Inrush current A 44/46/48 COP (In cooling) 2.
2.2 Range of usage & limitations Models All models Item Indoor return air temperature (Upper, lower limits) Refer to the selection chart Outdoor air temperature (Upper, lower limits) Refrigerant line (one way) length Max. 15m Vertical height difference between outdoor unit and indoor unit Max. 5m (Outdoor unit is higher) Max. 5m (Outdoor unit is lower) Power source voltage Rating Voltage at starting Min. 85 10 of rating Frequency of ON-OFF cycle Max. 10 times/h ON and OFF interval Max.
(2) Outdoor unit Models SRC50CA, 56CA, 56CA-4 50 12 14 49.6 314 290 43.5 12 328 Drain hole 286.4 476 203.1 510 Elogated hole (2-12X16) 136.9 850 Terminal block 640 124 34.6 Service valve (Liquide) φ 6.35 (1/4'') 20° Service valve (Gas) φ 12.7 (1/2'') 15 20° 100.3 42.7 Ground terminal 2.4 Piping system Models SRK50CA, 56CA, 56CA-4 Indoor unit Outdoor unit Flare connecting Service valve (Gas) Cooling cycle Piping (Gas) ø12.
2.5 Selection chart Correct the cooling capacity in accordance with the conditions as follows. The net cooling capacity can be obtained in the following way. Net capacity = Capacity shown on specification ✕ Correction factors as follows. (1) Coefficient of cooling capacity in relation to temperatures 1.3 Coefficient of cooling capacity in relation to temperature 1.2 Cooling 1.1 1.0 0.9 0.8 0.7 0.6 Outdoor air D.B. temperature °C D.B.
3 ELECTRICAL DATA 3.1 Electrical wiring Models SRK50CA, 56CA, 56CA-4 Power source 1 Phase 220/230/240V 50Hz Indoor unit Y/GN BL BR OR 4 RD 3 WH 2 BK 1 Y/GN 52C-4 G 52C Outdoor unit 52C-3 S 20S BL 4 250V BL F 100mA 3 WH 2 BK 1 ( ) RD 23D BK 52C 5 4 3 2 1 CNU F 250V 3.
4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Operation control function by remote controller Remote controller Models All models HI POWER operation indicator Indicators during HI POWER operation. FAN SPEED indicator ECONOMY operation indicator Indicators the ¡ for the fan speed which has been set. Indicators during ECONOMY operation. Operation switch over indicator Indicators the ¡ for the operation which has been set.
(2) Flap control Control the flap by AIRFLOW button on the wireless remote controller. (a) Natural flow (AUTO) The flap will be automatically set to the angle of air flow best to operation. (i) Starting time of operation In case of cooling s and dry operation t Stops for approximately 5 seconds in the horizontal position. (ii) When not operating The flap returns to the position of air flow directly below, when operation has stopped.
(4) AUTOMATIC operation (a) Determination of operation mode The blow operation of the indoor fan is carried out at the 1st speed for 20 seconds and the room temperature is checked to determine the operation mode automatically. (When the unit is operated by the turn-on timer, the blow operation is not carried out.) 21ºC Room temperature<26ºC 26ºC Room temperature Dry Cooling Operation mode (b) The temperature is checked once every 30 minutes after operation start.
(9) Fan control (a) Fan speed change Mode COOL Fan speed knob FAN AUTO See below LOW Speed 2 Speed 2 MED Speed 3 Speed 3 HIGH Speed 4 Speed 4 Note (1) Please refer to page 74 regarding dry operation. (b) Fan speed knob: AUTO The indoor fan is automatically controlled in accordance with the difference between the room temperature (detected by the room temperature thermistor) and the thermostat setting as shown below.
(c) DRY operation After finishing start up operation described in (b) above, thermal dry operation is performed at 8 minutes intervals, according to the difference between room temperature and thermostat setting temperature as shown below. Beside, 1 cycle of this operating time consists of 8 minutes, 7 cycle operation is performed then.
(13) Three-minute forced operation When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the operation mode. (After 3 minutes has passed the thermal operation is effective.) However, stopping the compressor via a stop signal or protection control has priority. (14) High power operation (Remote controller “HI POWER” button on) The indoor unit fan rotates at speed 6 for 15 minutes, and carries out continuous cooling and Fan.
5 APPLICATION DATA SAFETY PRECAUTIONS ¡ Please read these “Safety Precautions” first then accurately execute the installation work. ¡ Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section.
5.1 Selection of location for installation Unit : mm (1) Indoor unit (a) Where there is no obstructions to the air flow and where the 65 cooled air can be evenly distributed. (b) A solid place where the unit or the wall will not vibrate. (c) A place where there will be enough space for servicing. (Where Right side Left side 100 50 space mentioned below can be secured) 150 (d) Where wiring and the piping work will be easy to conduct.
5.2 Installation of indoor unit (1) Installation if installation board (a) Fixing of installation board Lock for the inside wall structures (Intermediate support or pillar) and firmly install the unit after level surface has been checked. Adjustment of the installation board in the horizontal direction is to be conducted with lour screws in a temporary tightened state. Standard hole Adjust so that board will be level by turning the board with the standard hole as the center.
(3) Preparation of indoor unit (a) Mounting of connecting wires (i) Open the suction grille, then remove the lid. (ii) Remove the wiring clamp. Suction grille (iii) Pass the connecting wire to terminal block from behind of indoor unit. (iv) Connect the connecting wire securely to the terminal block. 1 Connecting wire Connect the connection wire securely to the terminal block.
(4) Installation of indoor unit (a) Hang the upper portion of the unit rear cover on the mounting board, and then magnet on the lower unit portion will pull to fix the unit. (b) Be sure not to leave any trap on the drain pipe. Slighty push Declining slope Inverted slipe Mounting block Trap Wall 5.3 Installation of outdoor unit (1) Installation of outdoor unit (a) Make sure that sufficient space for installation and service is secured.
(2) Connection of refrigerant piping Indoor unit side Outdoor unit side ¡ Connect firmly gas and liquid side pipings by Torque wrench. ¡ Connect firmly gas and liquid side pipings by Torque wrench. Spanner (for fixing the piping) Torque wrench ¡ Specified torquing value: ¡ Specified torquing value: Liquid side (ø6.35) : 15.7~19.6 N·m(1.6~2.0 kgf·m) Liquid side (ø6.35): 15.7~19.6 N·m(1.6~2.0 kgf·m) Gas side (ø12.7) : 39.2~49.0 N·m(4.0~5.0 kgf·m) Gas side (ø12.7) : 39.2~49.0 N·m(4.0~5.
5.5 Test run (1) Conduct trial run after confirming that there is no gas leaks. (2) When conducting trial run set the remote controller thermostat to continuous operation position. However when the power source is cut off or when the unit’s operation switch is turned off or was turned to fan operation position, the unit will not go into operation in order to protect the compressor. (3) Insert in electric plug into the electric outlet and make sure that it is not loose.
6 MAINTENANCE DATA 6.1 Trouble shooting (1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models] All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it is necessary to understand the function controlled by a micro computer thoroughly, so as not to mistakenly identify correct operations as mis-operations.
(2) Indication of Self Diagnosis (Indoor unit) Connect of Defect TIMER lamp is lights continuously. RUN lamp is lights continuously. Place of defect RUN lamp is flashing. (1 Time flash.) Abnormality of heat exchanger thermistor. ¡ Disconnection of heat exchanger thermistor. RUN lamp is flashing. (2 Time flash.) Abnormality of room temperature thermistor. ¡ Disconnection of room temperature thermistor. RUN lamp is flashing. (6 Time flash.) Abnormality of indoor fan motor.
(4) Trouble Diagnostic Procedures Unit malfunctions or does not stop. Indoor lamp of indoor unit does not illuminate. Remove receptacle. Insert it after 3 min. and operate. Runaway of microcomputer No change. Replace PCB. Normal operation. Microcomputer rarely mis-starts even during times or power supply or power failure, but, it can sometimes occur during those times. If it occurs, check the operation, when the result is positive then proceed as normal. Check receptacle voltage.
(6) How to make sure of remote controller (1) Is remote controller normal? NO Note (1) How to check the remote controller Remote controller defects (a) (b) YES Again pushing operating switch Operating the unit? Press the reset switch of remote controller. If the almost normal if entire display of remote controller is shown after indication.
(2) Refrigerant charge (a) Discharge refrigerant entirely from the unit and evacuate the unit. (b) Keep the gauge manifold and connect a refrigerant cylinder to the unit. Note: Addition of refrigerant without evacuation is unreasonable, because it will result in low charge or overcharge. (c) Record the weight of the refrigerant cylinder on the balance. This is necessary for making sure of the charged refrigerant amount. (d) Purge air from the charge hose A .
SRK10CDV-1,-4 Part No. No. :RMA002F003A,RMA002F003K Part No Part Name RE.
SRK10CDV-1,-4 No. Part No Part Name RE.
SRC10CDV-1,-4 Part No. No. :RMC003F003A,RMC003F003C Part No Part Name RE.
SRC10CDV-1,-4 No. Part No Part Name RE.
SRK13CDV-1,-4 Part No. No. :RMA002F003C,RMA002F003L Part No Part Name RE.
SRK13CDV-1,-4 No. Part No Part Name RE.
SRC13CDV-1,-4 Part No. No. :RMC003F004A,RMC003F004G Part No Part Name RE.
SRC13CDV-1,-4 No. Part No Part Name RE.
－106－
SRK06CC-1,-4 Part No. No. :RWA002F033G,RWA002F033N Part No Part Name RE.
SRK06CC-1,-4 No. Part No Part Name RE.
SRC06CC-1,-4 Part No. No. :RWC003F037G,RWC003F037N Part No Part Name RE.
SRC06CC-1,-4 No. Part No Part Name RE.
SRK07CC-1,-4 Part No. No. :RWA002F033H,RWA002F033P Part No Part Name RE.
SRK07CC-1,-4 No. Part No Part Name RE.
SRC07CC-1,-4 Part No. No. :RWC003F037H,RWC003F037P Part No Part Name RE.
SRC07CC-1,-4 No. Part No Part Name RE.
SRK09CC-1,-4 Part No. No. :RWA002F033F,RWA002F033R Part No Part Name RE.
SRK09CC-1,-4 No. Part No Part Name RE.
SRC09CC-1,-4 Part No. No. :RWC003F037F,RWC003F037R Part No Part Name RE.
SRC09CC-1,-4 No. Part No Part Name RE.
SRK 12CC-1,-4 Part No. No. :RWA 002F037A,RWA 002F037C Part No Part Name RE.
SRK 12CC-1,-4 No. Part No Part Name RE.
SRC 12CC-1,-4 Part No. No. :RWC003F040A,RWC003F040C Part No Part Name RE.
SRC 12CC-1,-4 No. Part No Part Name RE.
－140－
SRK50A Part No. No. :RWA002F024 Part No Part Name RE.
SRK50A No. Part No Part Name RE.
SRC50CA Part No. No. :RWA003F024A Part No Part Name RE.
SRC50CA No. Part No Part Name RE.
SRK56A,-4 Part No. No. :RWA002F024A,RWA002F024J Part No Part Name RE.
SRK56A,-4 No. Part No Part Name RE.
SRC56CA,-4 Part No. No. :RWC 003F024C,RWC 003F024J Part No Part Name RE.
SRC56CA,-4 No. Part No Part Name RE.
2004 ROOM AIR-CONDITIONING TECHNICAL HANDBOOK - 2-
